Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is a freezing cold winter month in Saint Charles, Iowa, with an average temperature varying between 28.8°F (-1.8°C) and 15.3°F (-9.3°C). January is the coldest month, with an average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 15.3°F (-9.3°C). Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Saint Charles, Iowa, with an average temperature ranging between min 18.3°F (-7.6°C) and max 32.5°F (0.3°C). In February, the average high-temperature is practically the same as in January - a cold 32.5°F (0.3°C). Weather in February »
Weather in March
March, the first month of the spring in Saint Charles, is a frosty month, with an average temperature ranging between max 47.8°F (8.8°C) and min 32.5°F (0.3°C). In March, the average high-temperature significantly increases from a cold 32.5°F (0.3°C) in February to a frosty 47.8°F (8.8°C). Weather in March »
Weather in April
April in Saint Charles, Iowa, is a mild spring month, with an average temperature ranging between max 59.7°F (15.4°C) and min 42.3°F (5.7°C). In April, the average high-temperature rises from a chilly 47.8°F (8.8°C) in March to a moderate 59.7°F (15.4°C). Weather in April »
Weather in May
May, the last month of the spring in Saint Charles, is an agreeable month, with an average temperature varying between 52.7°F (11.5°C) and 69.4°F (20.8°C). In Saint Charles, Iowa, the average high-temperature in May increases from a mild 59.7°F (15.4°C) in April to a pleasant 69.4°F (20.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Saint Charles, Iowa, with an average temperature fluctuating between 79.7°F (26.5°C) and 63°F (17.2°C). In June, the average high-temperature increases from a pleasant 69.4°F (20.8°C) in May to a warm 79.7°F (26.5°C). Weather in June »
Weather in July
July, like June, in Saint Charles, Iowa, is another warm summer month, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 83.3°F (28.5°C). With an average high-temperature of 83.3°F (28.5°C) and an average low-temperature of 65.1°F (18.4°C), July is the warmest month. In July, the average heat index is evaluated at a hot 93.2°F (34°C). Weather in July »
Weather in August
August, the last month of the summer in Saint Charles, is another warm month, with an average temperature varying between 81.5°F (27.5°C) and 62.6°F (17°C). In August, the average high-temperature is essentially the same as in July - a still moderately hot 81.5°F (27.5°C). Weather in August »
Weather in September
September, the first month of the autumn in Saint Charles, is still a warm month, with an average temperature varying between 75.4°F (24.1°C) and 55.9°F (13.3°C). In Saint Charles, the average high-temperature in September marginally drops from 81.5°F (27.5°C) in August to a still warm 75.4°F (24.1°C). Weather in September »
Weather in October
October, like September, in Saint Charles, Iowa, is another comfortable autumn month, with an average temperature varying between 60.8°F (16°C) and 44.2°F (6.8°C). In October, the average high-temperature declines considerably from a warm 75.4°F (24.1°C) in September to a comfortable 60.8°F (16°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Saint Charles, Iowa, with temperature in the range of an average high of 47.3°F (8.5°C) and an average low of 32.7°F (0.4°C). In Saint Charles, the average high-temperature in November decreases from a comfortable 60.8°F (16°C) in October to a chilly 47.3°F (8.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Saint Charles, Iowa, with an average temperature ranging between max 34.3°F (1.3°C) and min 22.5°F (-5.3°C). In Saint Charles, the average high-temperature in December drops from a chilly 47.3°F (8.5°C) in November to a cold 34.3°F (1.3°C). Weather in December »
[Resources]FAQ
What is the coldest month in Saint Charles?
The coldest month is January, with an average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 15.3°F (-9.3°C).
What is the most humid month in Saint Charles?
The months with the highest humidity in Saint Charles, Iowa, are January, February and June, with an average relative humidity of 82%.
What is the driest month in Saint Charles?
The month with the least rainfall in Saint Charles is January, when the rain falls for 3.8 days and typically collects 0.91" (23mm) of precipitation.
How much does it rain in Saint Charles?
Throughout the year, there are 133 rainfall days, and 26.14" (664mm) of precipitation is accumulated.
When does it snow in Saint Charles?
January through May, October through December are months with snowfall in Saint Charles.
How much does it snow in Saint Charles?
Throughout the year, there are 35 snowfall days, and 15.04" (382mm) of snow is accumulated.
What is the month with the least sunshine in Saint Charles?
January has the least sunshine of the year in Saint Charles, with an average of 4.4h of sunshine.
When is the lowest UV index in Saint Charles?
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2.
What is the snowiest month in Saint Charles?
The month with the most snowfall in Saint Charles is February, when snow falls for 8.3 days and typically aggregates up to 4.53" (115mm) of snow.
When is Daylight Saving Time (DST) in Saint Charles?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Saint Charles, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from CDT to CST.
What is the rainiest month in Saint Charles?
May is the month with the most rainfall in Saint Charles. Rain falls for 17.5 days and accumulates 3.98" (101mm) of precipitation.
When it does not snow in Saint Charles?
In Saint Charles, snow does not fall in June through September.
When are the longest days in Saint Charles?
With an average of 15h and 7min of daylight, June has the longest days of the year in Saint Charles.
What is the month with the highest UV index in Saint Charles?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the warmest month in Saint Charles?
July is the warmest month in Saint Charles, Iowa, with an average high-temperature of 83.3°F (28.5°C) and an average low-temperature of 65.1°F (18.4°C).
What month has the most sunshine in Saint Charles?
July has the most sunshine of the year, with an average of 10.3h of sunshine.
What is the least humid month in Saint Charles?
October is the least humid month in Saint Charles, Iowa, with an average relative humidity of 71%.
What is the month with the shortest days in Saint Charles?
With an average of 9h and 15min of daylight, December has the shortest days of the year.
Average temperature
Saint Charles, IA
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (28.8°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure
Saint Charles, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Saint Charles, IA
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7mph - Average wind speed in September:
8.1mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity
Saint Charles, IA
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Saint Charles, IA
- Average rainfall in January:
0.91" - Average rainfall in February:
1.06" - Average rainfall in March:
1.77" - Average rainfall in April:
2.76" - Average rainfall in May:
3.98" - Average rainfall in June:
3.78"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days
Saint Charles, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3.8 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
17.9 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is June (17.9 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall
Saint Charles, IA
- Average snowfall in January:
4.29" - Average snowfall in February:
4.53" - Average snowfall in March:
1.97" - Average snowfall in April:
0.91" - Average snowfall in May:
0.35" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Saint Charles, IA
- Average snowfall days in January:
9.1 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
5 days - Average snowfall days in April:
1.7 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
2.7 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Charles, IA
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 39min - Average daylight in March:
11h and 58min - Average daylight in April:
13h and 21min - Average daylight in May:
14h and 31min - Average daylight in June:
15h and 7min
- Average daylight in July:
14h and 49min - Average daylight in August:
13h and 47min - Average daylight in September:
12h and 28min - Average daylight in October:
11h and 5min - Average daylight in November:
9h and 53min - Average daylight in December:
9h and 15min
The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 15min).
- Average sunshine in January:
4h and 24min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 18min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 42min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Saint Charles, IA
- Average sunshine days in January:
19.1 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
11 days - Average sunshine days in June:
9.8 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.9 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
20.2 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).
Average UV index
Saint Charles, IA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Saint Charles, IA
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility
Saint Charles, IA
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
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